SSID drops during WiFi throughput testing


  • Over the last few days, I have been running WiFi throughput tests with iPerf3 between my wired UniFi Application Sever (UAS-XG) and 4 wireless test clients, through the Gamer's Edition router WiFi The mesh points are not installed. I have done 5 rounds so far and not once round has completed without WiFi dropping in the middle of a test run. Some times the WiFi will drop during testing of 1st device or second device or 3rd device or 4th device. I regularly test UniFi APs and these dropouts do not happen. I have also tested Google/TP-Link OnHub Router and Linksys Velop router and these dropouts do not happen.

    My test lab setup and methodology is documented here: https://community.ui.com/questions/UniFi-AP-Throughput-Tests/e7f5b047-a94b-4531-b962-64c54b42326e

    In order to test 2G and 5G bands separately, I have created ADDITIONAL SSIDs: AmpliFi2G and AmpliFi5G.

    0_1599254987182_IMG_5037.PNG

    At the beginning of test everything looks good on the System Info - Devices page. Thank you for implementing this page and functionality.

    0_1599255207839_Screen Shot 2020-09-03 at 4.00.25 PM.png

    However, during the WiFi throughput test run, AmpliFi2G SSID will drop-off. My Macbook Pro 2014 (MBP2014) and Galaxy S6 Edge Plus will get disconnected from AmpliFi2G SSID but not other 2 devices. On MBP2014 and GalaxyS6, the AmpliFi2G SSID can no longer be seen to rejoin.

    On the System Info - Devices page, the CONNECTION percentage and TX/RX rate is much lower.

    0_1599255640858_Screen Shot 2020-09-03 at 5.09.21 PM.png

    The iPerf3 test output looks like this before and after AmpliFi2G SSID drops.

    iperf3 --forceflush -t60 -i5 -V -c 192.168.1.12 -P5
    iperf 3.7
    Linux UASXG 4.4.0-187-generic #217-Ubuntu SMP Tue Jul 21 04:18:15 UTC 2020 x86_64
    Control connection MSS 1448
    Time: Fri, 04 Sep 2020 20:42:58 GMT
    Connecting to host 192.168.1.12, port 5201
          Cookie: 3tm5griltmnuzgp6we77daywvolw5jucrn5c
          TCP MSS: 1448 (default)
    Starting Test: protocol: TCP, 5 streams, 131072 byte blocks, omitting 0 seconds, 60 second test, tos 0
    [ ID] Interval           Transfer     Bitrate         Retr  Cwnd
    [  5]  20.00-25.00  sec  8.89 MBytes  14.9 Mbits/sec   35   14.1 KBytes       
    [  7]  20.00-25.00  sec  8.20 MBytes  13.8 Mbits/sec   37   25.5 KBytes       
    [  9]  20.00-25.00  sec  8.20 MBytes  13.8 Mbits/sec   34   28.3 KBytes       
    [ 11]  20.00-25.00  sec  8.26 MBytes  13.9 Mbits/sec   39   8.48 KBytes       
    [ 13]  20.00-25.00  sec  10.9 MBytes  18.3 Mbits/sec   28   11.3 KBytes       
    [SUM]  20.00-25.00  sec  44.5 MBytes  74.6 Mbits/sec  173             
    - - - - - - - - - - - - - - - - - - - - - - - - -
    [  5]  25.00-30.00  sec  4.78 MBytes  8.02 Mbits/sec   27   1.41 KBytes       
    [  7]  25.00-30.00  sec  6.21 MBytes  10.4 Mbits/sec   21   1.41 KBytes       
    [  9]  25.00-30.00  sec  6.15 MBytes  10.3 Mbits/sec   19   1.41 KBytes       
    [ 11]  25.00-30.00  sec  4.78 MBytes  8.02 Mbits/sec   22   1.41 KBytes       
    [ 13]  25.00-30.00  sec  4.78 MBytes  8.02 Mbits/sec   24   1.41 KBytes       
    [SUM]  25.00-30.00  sec  26.7 MBytes  44.8 Mbits/sec  113             
    - - - - - - - - - - - - - - - - - - - - - - - - -
    [  5]  30.00-35.01  sec  0.00 Bytes  0.00 bits/sec    2   1.41 KBytes       
    [  7]  30.00-35.01  sec  0.00 Bytes  0.00 bits/sec    2   1.41 KBytes       
    [  9]  30.00-35.01  sec  0.00 Bytes  0.00 bits/sec    2   1.41 KBytes       
    [ 11]  30.00-35.01  sec  0.00 Bytes  0.00 bits/sec    2   1.41 KBytes       
    [ 13]  30.00-35.01  sec  0.00 Bytes  0.00 bits/sec    2   1.41 KBytes       
    [SUM]  30.00-35.01  sec  0.00 Bytes  0.00 bits/sec   10             
    - - - - - - - - - - - - - - - - - - - - - - - - -
    [  5]  35.01-40.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
    [  7]  35.01-40.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
    [  9]  35.01-40.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
    [ 11]  35.01-40.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
    [ 13]  35.01-40.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
    [SUM]  35.01-40.00  sec  0.00 Bytes  0.00 bits/sec    0   
    

Log in to reply